Circulating decimal and Decimal fraction

Circulating decimal noun - A decimal with a sequence of digits that repeats itself indefinitely.

Decimal fraction and circulating decimal are semantically related. In some cases you can use "Decimal fraction" instead a noun phrase "Circulating decimal".

Decimal fraction noun - A proper fraction whose denominator is a power of 10.

Circulating decimal and decimal fraction are semantically related. Sometimes you can replace phrase "Circulating decimal" with "Decimal fraction", this phrases are similar.